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Which among the following are man-made sources of air pollution? a. Burning of fire wood and dung cakes ​b. Forest fires c. Factories d. Power plants e. Volcanoes f. Automobiles

Answer»

Which among the following are man-made sources of air pollution?
a. Burning of fire wood and dung cakes
​b. Forest fires
c. Factories
d. Power plants
e. Volcanoes
f. Automobiles




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